Census Information: Find the most current information on population and other pertinent information.
Online Newshour: Get audio or streaming video of PBS's NewHour with Jim Lehrer. Good way to get a primary source document!
Library of Congress Photos: Currently the Library of Congress has uploaded 3,000 photos to Flickr from the 1910s, 1930s and 1940s. Great primary sources.
Geography
UT Maps: Get literally thousand of maps from all over the world. Great for adding to a presentation or poster. Searchable.
CIA--The World Fact Book: Find out anything you want to know about countries. Includes maps, definitions, flags and much more.
General Websites
Geography
Newspapers